National Bank of Slovakia, Bank of Greece, Bank of Greece, Bank of Latvia, Banque de France, De Nederlandsche Bank, Banque de France, European Central Bank (ECB), National Bank of Belgium, Bank of Italy, Banco de España, European Central Bank (ECB), European Central Bank (ECB), Banco de España, De Nederlandsche Bank, Latvijas Banka, European Central Bank (ECB), European Central Bank, Bank of Portugal - Research Department, Deutsche Bundesbank, Bank of Estonia, European Central Bank (ECB), Hrvatska Narodna Banka, European Central Bank (ECB), Hrvatska Narodna Banka, European Central Bank (ECB), Národná banka Slovenska, Bank of Finland and Bank of Slovenia